Honestly dude.....
K-38, please get one or preferably two of the loading manuals with a good 'how to' section, such as Speer, Lyman, Hornady or one of the others. Beside load data they have great sections describing the ins and outs of each cartridge type such as straight wall, rimmed, semi auto rimless, bottleneck rifle cartridges, etc.
You are starting out with .38 which is one of the easiest rounds to load for. No matter how you plan to measure out your powder make sure that you have a good scale to check the weight of powder against. It's EASY to make a double charge of some powders and it's very hard to judge the level in the case and that will blow your gun to pieces. Wadcutters are easy to load for, start at the minimum charge in the data and work up .2 grains at a time until you get the load you want.
Are you going to use the soft lead swaged wadcutter put out by Speer and Hornady or are you going to use hard cast? Soft lead wadcutters can't be pushed beyond about 1000 fps and hard cast bullets should be used with higher velocities.
The Dillon equipment is FANTASTIC but you may have jumped in too deep with a progressive press to start. If you get frustrated, drop back to a single stage or maybe a turret until you get familiar with the process.
You have to be careful of 'squib' rounds that pop only the primer or a too small charge of powder and get stuck in the barrel. If you shoot after a bullets gets lodged you can damage the gun barrel.
There are TONS of safety tips in these manuals and you can use Youtube also. I hope you have a great time entering the reloading club but SAFETY is most important. Safety can be had by studying and familiarity as well as a mindset that you aren't going to let anything interrupt you when reloading and try to avoid anything dangerous at all.
Glad to meetcha and a Hound Dawg Howdy from SC USA.
PS: Stay with us and feel free to ask questions. Make sure you've done your homework because a lack of rudimentary knowledge tells people that you are jumping in without knowing what you are doing.
PPS. The manufacturer will clearly describe their dies as being for .38 special or whatever caliber you are loading. Some .38 special dies will also load .357 magnum because the cartridges are almost the same size, the .357s are just a little longer.
Dies have some special features, especially with progressive presses like 'pour through' design for the power.